While the X-Men's rescue mission was compromised by the identity of the mutant they were tracking, it's now completely shot to hell by the intervention of Department H! Normally, not a problem for the X-Men, but the Science Team wasn't a group assembled for battle.
The X-Men Science Team heads to the Rocky Mountains to investigate strange anomalies of physics while in pursuit of a Cerebro signal. But there are others who are interested as well, and the mutant they find is not the mutant they expect…